[R] accessing list elements

Erik Iverson iverson at biostat.wisc.edu
Tue Jul 29 19:36:54 CEST 2008


Hello -

Paul Adams wrote:
> Hello everyone, I have a list which I am trying to calculate a max
> value.I have the list as w<-c(v[[1]][1],...v[[100]][1]). The problem
> I am getting is that the function max is saying the list is an
> "invalid type (list) of  argument".When I show the element v[[1]][1]
> it shows as $statistic,V,736.I am only wanting to use the number 736
> from v[[1]][1] but am not sure how to access that number only?I
> believe if I just use the number then I should be able to calculate
> the max.
> 
> Any help would be appreciated Paul

Please see footer of this message, which states "...provide commented, 
minimal, self-contained, reproducible code."

You do not do this.

Is your problem like this?

a <- list(20, 30)
max(a) ##error
max(unlist(a)) ##no error


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